Good to know I was not wrong about leaving the LFE at 15Hz then. I will leave the HFE at the recommended 225Hz rather than changing it to 80Hz. Hopefully that makes the difference. I'm going to upload them now, and will post results in my reply to Bandyka's most recent post. Thank you!Oh no reason to be embarrassed there's a lot going on with some things in Genesis and others in the Anthem itself. The High Frequency Extension is the highest frequency the sub will play. You should leave it to whatever Genesis sets it at. As you know the Low Frequency Extension is the lowest frequency the sub will play. So if your HFE is 250Hz and your LFE is 15Hz then your sub will play frequencies sent to it between 15-250Hz so your sub has a high and low limit to what it will play..
The subwoofer crossover is actually in the Anthem on the Bass Management screen and mine was set by Genesis at 120Hz. I'd set the sub to flat and let it play as low as it is capable of. The sub has an internal limiter so you won't damage the sub.